Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Reexamination Certificate
2007-05-10
2009-08-04
Choe, Henry K (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
C330S255000
Reexamination Certificate
active
07570116
ABSTRACT:
An output stage, comprising a first transistor operable to pull a voltage at an output node towards a first voltage, and a rechargeable energy store having a potential difference between first and second terminals wherein the rechargeable energy store is arranged to be controllably connected between the output node and a second voltage supply such that the voltage at the output node can be driven to a voltage outside of a range defined between the first and second voltages.
REFERENCES:
patent: 4912425 (1990-03-01), Kobayashi et al.
patent: 6384685 (2002-05-01), Juang
patent: 6784739 (2004-08-01), Reffay et al.
patent: 6794942 (2004-09-01), Smith
Haila Olli
Qin Song
Shao Bin
Analog Devices Inc.
Choe Henry K
Wolf Greenfield & Sacks P.C.
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